CN115071082B - Micro-die opening system for realizing correlation injection molding machine and control method thereof - Google Patents
Micro-die opening system for realizing correlation injection molding machine and control method thereof Download PDFInfo
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- CN115071082B CN115071082B CN202210464561.1A CN202210464561A CN115071082B CN 115071082 B CN115071082 B CN 115071082B CN 202210464561 A CN202210464561 A CN 202210464561A CN 115071082 B CN115071082 B CN 115071082B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6778—Stroke adjusting or limiting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
- B29C2045/326—Supporting means for the central mould plate
Abstract
The invention discloses a micro die opening system for realizing a correlation injection molding machine and a hydraulic control loop thereof, which comprises the following components: the movable mould driving module comprises a first oil tank, a first oil way, a second oil way, mould locking oil cylinders and a micro-opening unit, wherein the first oil tank is used for storing oil, the first oil way and the second oil way are independently communicated with the first oil tank and used for conveying the oil, the number of the mould locking oil cylinders is multiple, each mould locking oil cylinder is respectively communicated with the first oil way and the first oil tank, the micro-opening unit is in one-to-one correspondence with the mould locking oil cylinders, and the micro-opening unit is communicated with the second oil way and drives the movable mould plate through the corresponding mould locking oil cylinders; the push-pull module comprises a platform moving oil cylinder, a second oil tank and a third oil way, wherein the platform moving oil cylinder can push/pull the middle plate and is matched with the movable die driving module to finish micro die opening of the movable die plate/fixed die plate, and the micro die opening precision is high and the push-pull module is suitable for an opposite injection molding machine.
Description
Technical Field
The invention relates to the technical field of opposite injection molding machines, in particular to a micro-die opening system for realizing opposite injection molding machines and a control method thereof.
Background
With the rapid development of manufacturing technology, the types of machine injection materials are more and more, the use working conditions are more and more complex, many injection molding processes require that an injection machine is slightly opened by a few millimeters after being closed, then injection is performed, and finally the injection machine is closed and locked, so that the problem of non-ideal structure opening effect of the existing injection machine is solved under the special working conditions.
In the prior art, as disclosed in patent No. 201610049021.1, an improved micro-mold opening system of an injection molding machine is provided for a conventional single-mold injection molding machine, and a micro-mold opening unit is utilized to control a mold locking oil cylinder to act, and the mold locking oil cylinder drives a movable mold to move for micro-mold opening, so that high-precision micro-mold opening is realized. However, there is a great limitation that the method is limited to micro-mold opening of a single mold, and when an opposite injection molding machine, namely a dual-mold injection molding machine is selected, the original micro-mold opening system is not applicable.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a micro-die opening system for an opposite injection molding machine and a control method thereof, which can realize accurate micro-die opening of double dies of the opposite injection molding machine and improve the quality of molded products.
The technical scheme adopted by the invention for solving the technical problems is that the micro-die opening system for realizing the correlation injection molding machine is provided with a movable die plate, a fixed die plate and a middle plate positioned between the fixed die plate and the movable die plate, and comprises:
the movable mould driving module is positioned on the movable mould plate and comprises a first oil tank, a first oil way, a second oil way, mould locking oil cylinders and a micro-opening unit, wherein the first oil tank is used for storing oil, the first oil way and the second oil way are independently communicated with the first oil tank and used for conveying the oil, the mould locking oil cylinders are arranged in a plurality, each mould locking oil cylinder is respectively communicated with the first oil way and the first oil tank, the micro-opening unit corresponds to the mould locking oil cylinders one by one, and the micro-opening unit is communicated with the second oil way and drives the movable mould plate through the corresponding mould locking oil cylinders;
the pushing and pulling module is positioned on the middle plate and comprises a platform moving oil cylinder, a second oil tank and a third oil way, wherein the second oil tank is used for storing oil, the third oil way is communicated with the second oil tank, a plurality of platform moving oil cylinders are arranged, and each platform moving oil cylinder is respectively communicated with the third oil way and the second oil tank;
the platform moving oil cylinder can push/pull the middle plate and is matched with the movable die driving module to finish micro die opening of the movable die plate/the fixed die plate.
According to the micro-die opening system for the correlation injection molding machine, each micro-die opening unit comprises a servo valve and a cartridge valve which are mutually communicated, the servo valves are respectively communicated with the oil tank and the corresponding die locking oil cylinder, and the cartridge valves are communicated with the second oil path.
According to the micro-die opening system for the correlation injection molding machine, the die locking cylinder is provided with a die locking piston rod, the die locking piston rod divides the die locking cylinder into a rod cavity and a rodless cavity, the rod cavity of the die locking cylinder is communicated with the servo valve, and the rodless cavity of the die locking cylinder is communicated with the first oil way.
According to the micro die opening system for the correlation injection molding machine, the cartridge valve is connected with the electromagnetic directional valve, the electromagnetic directional valve is communicated with the second oil way through the shuttle valve, and the cartridge valve, the electromagnetic directional valve, the shuttle valve and the second oil way are communicated.
According to the micro die opening system for the correlation injection molding machine, the cartridge valve is further connected with an overflow valve, and the overflow valve is communicated with the first oil tank.
According to the micro die opening system for the correlation injection molding machine, each die locking oil cylinder is connected with a pressure sensor, and each pressure sensor is communicated with the rod cavity of the corresponding die locking oil cylinder.
According to the micro die opening system for realizing the correlation injection molding machine, the platform moving cylinder is provided with the platform moving piston rod, the platform moving piston rod divides the platform moving cylinder into a rod cavity and a rodless cavity, and the third oil way is communicated with the rod cavity/the rodless cavity of the platform moving cylinder through the proportional valve.
The micro die opening system for realizing the correlation injection molding machine further comprises an auxiliary module, wherein the auxiliary module comprises a fixed die breaking module fixed on the fixed die plate and a movable die breaking module fixed on the movable die plate;
the fixed die breaking assembly comprises a third oil tank, a fourth oil way and a first breaking oil cylinder, wherein the fourth oil way is communicated with the third oil tank, a plurality of first breaking oil cylinders are arranged, each first breaking oil cylinder is respectively communicated with the third oil tank and the fourth oil way, a first breaking piston rod is arranged on the first breaking oil cylinder, the first breaking piston rod divides the first breaking oil cylinder into a rod cavity and a rodless cavity, and the fourth oil way is communicated with the rod cavity/the rodless cavity of the first breaking oil cylinder through a first electromagnetic reversing valve;
the movable die breaking assembly comprises a fourth oil tank, a fifth oil way and a second die breaking oil cylinder, wherein the fifth oil way is communicated with the fourth oil tank, a plurality of second die breaking oil cylinders are arranged, each second die breaking oil cylinder is respectively communicated with the fourth oil tank and the fifth oil way, a second die breaking piston rod is arranged on the second die breaking oil cylinder, the second die breaking piston rod divides the second die breaking oil cylinder into a rod cavity and a rodless cavity, and the fifth oil way is communicated with the rod cavity/the rodless cavity of the second die breaking oil cylinder through a second electromagnetic reversing valve.
A control method for realizing a micro-mold opening system of a correlation injection molding machine, comprising the following steps:
s1: preliminary micro-die opening of the movable die plate/fixed die plate: the electromagnetic directional valve is in a closed state, the cartridge valve is in an open state, an oil way on one side of the servo valve is opened, oil sequentially passes through the cartridge valve and the servo valve from a second oil way to enter a rod cavity of the mode locking oil cylinder, and pushes a mode locking piston rod to move inwards, and oil in a rodless cavity of the mode locking oil cylinder returns through a first oil way; meanwhile, selecting a movable template/fixed template micro-die, if the movable template micro-die is selected, opening an oil way at one side of a proportional valve, enabling oil to enter a rod cavity of a platform moving oil cylinder from a third oil way through the proportional valve, and pushing a piston rod of the platform moving oil cylinder to move inwards; if the fixed template is selected to be slightly opened, an oil way at the other side of the proportional valve is opened, oil enters a rodless cavity of the platform moving oil cylinder from a third oil way through the proportional valve, and a piston rod of the platform moving oil cylinder is pushed to move outwards;
s2: preliminary pressure maintaining: opening the electromagnetic directional valve to enable the cartridge valve to be in a closed state, driving the servo valve to return to the middle position, enabling all oil ways to be in a pressure maintaining state, and keeping the position of the mode locking piston rod unchanged;
s3: micro-die opening size adjustment: the electromagnetic directional valve and the cartridge valve are kept unchanged, an oil way at the other side of the servo valve is opened, oil enters a rodless cavity of the mode locking oil cylinder from a first oil way, and pushes a mode locking piston rod to move outwards, and the oil in the rod cavity of the mode locking oil cylinder flows back to the oil tank through the servo valve;
s4: and (3) locking a mold: and driving the servo valve to return to the middle position, wherein each oil way is in a pressure maintaining state, and the position of the mode locking piston rod is kept unchanged.
In the above-mentioned control method for implementing the micro-die opening system of the correlation injection molding machine, in step S1, when the movable die plate is selected to be slightly opened, an oil path on one side of the second electromagnetic directional valve is opened, oil enters a rod cavity of the second die breaking cylinder from a fifth oil path through the second electromagnetic directional valve, and pushes the second die breaking piston rod to move inwards; when the fixed template is selected to be slightly opened, an oil way at the other side of the first electromagnetic directional valve is opened, oil enters a rod cavity of the first mold breaking oil cylinder from a fourth oil way through the first electromagnetic directional valve, and a piston rod of the first mold breaking oil cylinder is pushed to move inwards.
Compared with the prior art, the invention has at least the following beneficial effects: when the movable mould driving module drives the movable mould plate to move, the push-pull module can push or pull the middle plate, can push the middle plate to the movable mould plate, so that the position of the middle plate and the position of the movable mould plate are kept fixed, the micro-opening of the fixed mould plate is realized, the middle plate and the position of the fixed mould plate are kept fixed, the micro-opening of the movable mould plate is realized, the movable mould plate is suitable for a correlation injection moulding machine, and the product forming quality is ensured; and the movable template and the fixed template are both provided with a die-breaking oil cylinder, so that the micro die-opening efficiency of the movable template or the fixed template can be improved through the die-breaking oil cylinder.
Drawings
FIG. 1 is a diagram of the oil circuit of a movable mold driving module according to the present invention;
FIG. 2 is a diagram of the oil circuit of the platform mobile oil cylinder of the present invention;
FIG. 3 is a schematic view of a stationary mold breaking assembly according to the present invention;
FIG. 4 is a schematic view of a movable mold breaking assembly according to the present invention;
fig. 5 is a schematic view of the whole structure of the correlation injection molding machine of the present invention.
In the figure:
2. a first oil passage; 3. a second oil path; 4. a mode locking oil cylinder; 5. a platform moving oil cylinder; 6. a second oil tank; 7. a third oil passage; 8. a servo valve; 9. a cartridge valve; 10. a mode locking piston rod; 11. an electromagnetic directional valve; 12. a shuttle valve; 13. an overflow valve; 14. the platform moves the piston rod; 15. a third oil tank; 16. a fourth oil passage; 17. a first mold breaking oil cylinder; 18. a first die breaking piston rod; 19. a first electromagnetic directional valve; 20. a fourth oil tank; 21. a fifth oil passage; 22. a second mold breaking oil cylinder; 23. a second die breaking piston rod; 24. a second electromagnetic directional valve; 25. a movable template; 26. a stationary mold plate; 27. an intermediate plate; 28. and a proportional valve.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1-5, the invention discloses a micro-mold opening system for implementing a correlation injection molding machine, the correlation injection molding machine is provided with a movable mold plate 25, a fixed mold plate 26 and an intermediate plate 27 positioned between the fixed mold plate 26 and the movable mold plate 25, wherein the movable mold plate 25 and the intermediate plate 27 are surrounded to form a first mold, the fixed mold plate 26 and the intermediate plate 27 are surrounded to form a second mold, and guide rods are arranged among the movable mold plate 25, the intermediate plate 27 and the fixed mold plate 26, the micro-mold opening system comprises:
the movable mould driving module is located on the movable mould plate 25, the movable mould driving module comprises a first oil tank, a first oil path 2, a second oil path 3, a mould locking oil cylinder 4 and a micro-opening unit, the first oil tank is used for storing oil, the first oil path 2 and the second oil path 3 are independently communicated with the first oil tank and are used for conveying the oil, the plurality of mould locking oil cylinders 4 are arranged, each mould locking oil cylinder 4 is respectively communicated with the first oil path 2 and the first oil tank, the micro-opening unit is in one-to-one correspondence with the mould locking oil cylinders 4, the micro-opening unit is communicated with the second oil path 3 and drives the movable mould plate 25 through the corresponding mould locking oil cylinders 4, the micro-opening unit controls the mould locking oil cylinders 4 to act, and the mould locking oil cylinders 4 can realize micro-opening of the movable mould plate 25 under the condition that other parts are kept motionless, namely the micro-opening of the first mould.
The push-pull module is located on the middle plate 27, the push-pull module comprises a platform moving oil cylinder 5, a second oil tank 6 and a third oil way 7, the second oil tank 6 is used for storing oil, the third oil way 7 is communicated with the second oil tank 6, the platform moving oil cylinders 5 are arranged in a plurality, each platform moving oil cylinder 5 is respectively communicated with the third oil way 7 and the second oil tank 6, and the second oil tank 6 supplies oil for the platform moving oil cylinders 5 through the third oil way 7.
Preferably, the platform moving cylinder 5 can push/pull the middle plate 27, and cooperates with the movable mold driving module to complete micro-opening of the movable mold plate 25/fixed mold plate 26, the platform moving cylinder 5 is disposed between the middle plate 27 and the fixed mold plate 26, when the platform moving cylinder 5 pushes the middle plate 27 to one side of the movable mold plate 25, the middle plate 27 and the movable mold plate 25 can be kept fixed integrally during the movement of the movable mold plate 25, the middle plate 27 is separated from the fixed mold plate 26, so as to realize micro-opening of the fixed mold plate 26, namely micro-opening of the second mold, and when the platform moving cylinder 5 pulls the middle plate 27, the position between the middle plate 27 and the fixed mold plate 26 is kept stable, and the movement of the movable mold plate 25 can realize micro-opening of the movable mold plate 25, namely micro-opening of the first mold, so that the micro-opening of the movable mold plate 25 and the fixed mold plate 26 can be controlled independently, and the micro-opening of the injection molding machine can be controlled precisely.
Preferably, each micro-opening unit comprises a servo valve 8 and a cartridge valve 9 which are mutually communicated, the servo valves 8 are respectively communicated with the first oil tank and the corresponding mode locking oil cylinder 4, the cartridge valves 9 are communicated with the second oil circuit 3, and the action precision of the mode locking oil cylinder 4 can be improved through the servo valves 8.
Further preferably, the mold locking cylinder 4 has a mold locking piston rod 10, and the mold locking piston rod 10 divides the mold locking cylinder 4 into a rod cavity and a rod-free cavity, the rod cavity of the mold locking cylinder 4 is communicated with the servo valve 8, and the rod-free cavity of the mold locking cylinder 4 is communicated with the first oil path 2.
Further preferably, the cartridge valve 9 is connected with an electromagnetic directional valve 11, the electromagnetic directional valve 11 is communicated with the second oil path 3 through a shuttle valve 12, and the cartridge valve 9, the electromagnetic directional valve 11, the shuttle valve 12 and the second oil path 3 are communicated.
Further preferably, the cartridge valve 9 is further connected with an overflow valve 13, the overflow valve 13 is communicated with the first oil tank, and when the oil is excessive, a part of the oil can be returned into the first oil tank through the overflow valve 13.
Further preferably, each mold locking cylinder 4 is connected with a pressure sensor, each pressure sensor is communicated with a corresponding rod cavity, the pressure of the rod cavity is sensed by the pressure sensor, and when a preset value is reached, a signal is fed back to the control system by the pressure sensor, so that the oil supply is stopped.
Further preferably, the platform moving cylinder 5 is provided with a platform moving piston rod 14, the platform moving piston rod 14 divides the platform moving cylinder 5 into a rod cavity and a rodless cavity, the third oil path 7 is communicated with the rod cavity/rodless cavity of the platform moving cylinder 5 through a proportional valve 28, and the third oil path 7 is used for communicating oil to the rod cavity or rodless cavity of the platform moving cylinder 5 through the proportional valve 28 to push the middle plate 27 or pull the middle plate 27.
Still preferably, the mold assembly further comprises an auxiliary module, the auxiliary module comprises a fixed mold breaking module fixed on the fixed mold plate 26 and a movable mold breaking module fixed on the movable mold plate 25, the fixed mold breaking module is used for assisting in micro-opening of the fixed mold plate 26, and the movable mold breaking module is used for assisting in micro-opening of the movable mold plate 25, wherein: the fixed die breaking assembly comprises a third oil tank 15, a fourth oil way 16 and a first breaking cylinder 17, wherein the fourth oil way 16 is communicated with the third oil tank 15, a plurality of first breaking cylinders 17 are arranged, each first breaking cylinder 17 is respectively communicated with the third oil tank 15 and the fourth oil way 16, a first breaking piston rod 18 is arranged on each first breaking cylinder 17, the first breaking piston rod 18 divides the first breaking cylinder 17 into a rod cavity and a rodless cavity, and the fourth oil way 16 is communicated with the rod cavity/rodless cavity of the first breaking cylinder 17 through a first electromagnetic directional valve 19; the movable die breaking assembly comprises a fourth oil tank 20, a fifth oil way 21 and a second die breaking oil cylinder 22, wherein the fifth oil way 21 is communicated with the fourth oil tank 20, a plurality of second die breaking oil cylinders 22 are arranged, each second die breaking oil cylinder 22 is respectively communicated with the fourth oil tank 20 and the fifth oil way 21, a second die breaking piston rod 23 is arranged on each second die breaking oil cylinder 22, the second die breaking piston rod 23 divides the second die breaking oil cylinders 22 into a rod cavity and a rodless cavity, and the fifth oil way 21 is communicated with the rod cavity/rodless cavity of each second die breaking oil cylinder 22 through a second electromagnetic directional valve 24.
A control method for realizing a micro-die opening system of a correlation injection molding machine comprises the following steps:
s1: preliminary micro-opening of the movable/fixed mold plates 25, 26: the electromagnetic directional valve 11 is in a closed state, the cartridge valve 9 is in an open state, an oil way on one side of the servo valve 8 is opened, oil sequentially passes through the cartridge valve 9 and the servo valve 8 from the second oil way 3, enters a rod cavity of the mold locking cylinder 4, pushes the mold locking piston rod 10 to move inwards, and oil in a rodless cavity of the mold locking cylinder 4 returns through the first oil way 2; simultaneously selecting a movable template 25/fixed template 26 for micro-die opening, if the movable template 25 is selected for micro-die opening, opening an oil way at one side of a proportional valve 28, enabling oil to enter a rod cavity of the platform moving oil cylinder 5 from a third oil way 7 through the proportional valve 28, and pushing a piston rod of the platform moving oil cylinder 5 to move inwards; if the fixed template 26 is selected to slightly open the die, opening an oil way at the other side of the proportional valve 28, and enabling oil to enter a rodless cavity of the platform moving oil cylinder 5 from the third oil way 7 through the proportional valve 28 and pushing a piston rod of the platform moving oil cylinder 5 to move outwards; after the oil enters the rod cavity, the mold locking oil cylinder 4 drives the guide rod, the movable mold plate 25 is driven to move to one side far away from the middle plate 27 through the guide rod, and the middle plate 27 is pushed/pulled through the platform moving oil cylinder 5, so that the micro-mold opening of the movable mold plate 25 or the micro-mold opening of the fixed mold plate 26 is realized.
S2: preliminary pressure maintaining: the electromagnetic directional valve 11 is opened to enable the cartridge valve 9 to be in a closed state, the servo valve 8 is driven to return to the middle position, at the moment, all oil ways are in a pressure maintaining state, the position of the mold locking piston rod 10 is kept unchanged, at the moment, the position of the movable mold plate 25 is fixed, and the state of preliminary pressure maintaining is achieved.
S3: micro-die opening size adjustment: the electromagnetic direction valve 11 and the cartridge valve 9 are kept unchanged, the oil way at the other side of the servo valve 8 is opened, oil enters the rodless cavity of the mold locking oil cylinder 4 from the first oil way 2, the mold locking piston rod 10 is pushed to move outwards, the oil in the rod cavity of the mold locking oil cylinder 4 flows back to the oil tank through the servo valve 8, after the primary micro-opening, the movable mold plate 25 usually cannot reach the size range of the micro-opening at one time, and the movable mold plate 25 needs to be retracted a bit distance to reach the standard of the micro-opening.
S4: and (3) locking a mold: the servo valve 8 is driven to return to the middle position, at this time, each oil way is in a pressure maintaining state, the position of the mold locking piston rod 10 is kept unchanged, and after the micro mold opening is completed, the mold locking cylinder 4 only has the mold locking effect, and the movable mold plate 25 and the middle frame stop acting.
Preferably, in step S1, when the movable die plate 25 is selected to slightly open, an oil path on one side of the second electromagnetic directional valve 24 is opened, and oil enters a rod cavity of the second die breaking cylinder 22 from the fifth oil path 21 through the second electromagnetic directional valve 24, and pushes the second die breaking piston rod 23 to move inwards; when the fixed die plate 26 is selected to be slightly opened, an oil way on the other side of the first electromagnetic directional valve 19 is opened, oil enters a rod cavity of the first die breaking oil cylinder 17 from the fourth oil way 16 through the first electromagnetic directional valve 19, and pushes a piston rod of the first die breaking oil cylinder 17 to move inwards, namely, when the movable die plate 25 is slightly opened, the second die breaking oil cylinder 22 drives the middle frame to be attached to the fixed die plate 26, and a reaction force is provided to act on the movable die plate 25, so that the movable die plate 25 is easier to be slightly opened, and when the fixed die plate 26 is slightly opened, the first die breaking oil cylinder 17 drives the middle frame to be attached to the movable die plate 25, so that the middle frame is separated from the fixed die plate 26, and the fixed die plate 26 is easier to be slightly opened.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Claims (10)
1. The utility model provides an realize little die sinking system of correlation injection molding machine, be equipped with movable mould board, fixed mould board and be located on the correlation injection molding machine the fixed mould board with intermediate lamella between the movable mould board, its characterized in that, little die sinking system includes:
the movable mould driving module is positioned on the movable mould plate and comprises a first oil tank, a first oil way, a second oil way, mould locking oil cylinders and a micro-opening unit, wherein the first oil tank is used for storing oil, the first oil way and the second oil way are independently communicated with the first oil tank and used for conveying the oil, the mould locking oil cylinders are arranged in a plurality, each mould locking oil cylinder is respectively communicated with the first oil way and the first oil tank, the micro-opening unit corresponds to the mould locking oil cylinders one by one, and the micro-opening unit is communicated with the second oil way and drives the movable mould plate through the corresponding mould locking oil cylinders;
the pushing and pulling module is positioned on the middle plate and comprises a platform moving oil cylinder, a second oil tank and a third oil way, wherein the second oil tank is used for storing oil, the third oil way is communicated with the second oil tank, a plurality of platform moving oil cylinders are arranged, and each platform moving oil cylinder is respectively communicated with the third oil way and the second oil tank;
the platform moving oil cylinder can push/pull the middle plate and is matched with the movable die driving module to finish micro die opening of the movable die plate/the fixed die plate;
the platform oil cylinder is arranged between the middle plate and the fixed die plate, when the platform moving oil cylinder pushes the middle plate to move towards one side close to the movable die plate, the middle plate and the movable die plate can be integrally kept fixed when the movable die moves, the middle plate is separated from the fixed die plate so as to realize micro-die opening of the fixed die plate, when the middle plate is pulled by the platform moving oil cylinder, the position between the middle plate and the fixed die plate is kept fixed, and the micro-die opening of the movable die plate can be realized when the movable die plate moves.
2. The micro-die opening system for realizing the correlation injection molding machine according to claim 1, wherein each micro-die opening unit comprises a servo valve and a cartridge valve which are communicated with each other, the servo valves are respectively communicated with a first oil tank and a corresponding die locking oil cylinder, and the cartridge valves are communicated with a second oil path.
3. The micro-mold opening system for realizing the correlation injection molding machine according to claim 2, wherein the mold locking cylinder is provided with a mold locking piston rod, the mold locking piston rod divides the mold locking cylinder into a rod cavity and a rod-free cavity, the rod cavity of the mold locking cylinder is communicated with the servo valve, and the rod-free cavity of the mold locking cylinder is communicated with the first oil way.
4. A micro-die opening system for realizing a correlation injection molding machine according to claim 2 or 3, wherein the cartridge valve is connected with an electromagnetic directional valve, the electromagnetic directional valve is communicated with a second oil path through a shuttle valve, and the cartridge valve, the electromagnetic directional valve, the shuttle valve and the second oil path are communicated.
5. The micro-mold opening system for an injection molding machine according to claim 4, wherein the cartridge valve is further connected with an overflow valve, and the overflow valve is communicated with the first oil tank.
6. A micro-mold opening system for realizing a correlation injection molding machine according to claim 3, wherein each mold locking cylinder is connected with a pressure sensor, and each pressure sensor is communicated with a rod cavity of the corresponding mold locking cylinder.
7. The micro-mold opening system for realizing the correlation injection molding machine according to claim 4, wherein a platform moving piston rod is arranged on the platform moving cylinder, the platform moving piston rod divides the platform moving cylinder into a rod cavity and a rodless cavity, and the third oil way is communicated with the rod cavity/the rodless cavity of the platform moving cylinder through a proportional valve.
8. The micro-mold opening system for realizing the correlation injection molding machine according to claim 7, further comprising an auxiliary module, wherein the auxiliary module comprises a fixed mold breaking module fixed on a fixed mold plate and a movable mold breaking module fixed on a movable mold plate;
the fixed die breaking assembly comprises a third oil tank, a fourth oil way and a first breaking oil cylinder, wherein the fourth oil way is communicated with the third oil tank, a plurality of first breaking oil cylinders are arranged, each first breaking oil cylinder is respectively communicated with the third oil tank and the fourth oil way, a first breaking piston rod is arranged on the first breaking oil cylinder, the first breaking piston rod divides the first breaking oil cylinder into a rod cavity and a rodless cavity, and the fourth oil way is communicated with the rod cavity/the rodless cavity of the first breaking oil cylinder through a first electromagnetic reversing valve;
the movable die breaking assembly comprises a fourth oil tank, a fifth oil way and a second die breaking oil cylinder, wherein the fifth oil way is communicated with the fourth oil tank, a plurality of second die breaking oil cylinders are arranged, each second die breaking oil cylinder is respectively communicated with the fourth oil tank and the fifth oil way, a second die breaking piston rod is arranged on the second die breaking oil cylinder, the second die breaking piston rod divides the second die breaking oil cylinder into a rod cavity and a rodless cavity, and the fifth oil way is communicated with the rod cavity/the rodless cavity of the second die breaking oil cylinder through a second electromagnetic reversing valve.
9. A control method for realizing a micro-mold opening system of an injection molding machine according to claim 8, comprising the steps of:
s1: preliminary micro-die opening of the movable die plate/fixed die plate: the electromagnetic directional valve is in a closed state, the cartridge valve is in an open state, an oil way on one side of the servo valve is opened, oil sequentially passes through the cartridge valve and the servo valve from a second oil way to enter a rod cavity of the mode locking oil cylinder, and pushes a mode locking piston rod to move inwards, and oil in a rodless cavity of the mode locking oil cylinder returns through a first oil way; meanwhile, selecting a movable template/fixed template micro-die, if the movable template micro-die is selected, opening an oil way at one side of a proportional valve, enabling oil to enter a rod cavity of a platform moving oil cylinder from a third oil way through the proportional valve, and pushing a piston rod of the platform moving oil cylinder to move inwards; if the fixed template is selected to be slightly opened, an oil way at the other side of the proportional valve is opened, oil enters a rodless cavity of the platform moving oil cylinder from a third oil way through the proportional valve, and a piston rod of the platform moving oil cylinder is pushed to move outwards;
s2: preliminary pressure maintaining: opening the electromagnetic directional valve to enable the cartridge valve to be in a closed state, driving the servo valve to return to the middle position, enabling all oil ways to be in a pressure maintaining state, and keeping the position of the mode locking piston rod unchanged;
s3: micro-die opening size adjustment: the electromagnetic directional valve and the cartridge valve are kept unchanged, an oil way at the other side of the servo valve is opened, oil enters a rodless cavity of the mode locking oil cylinder from a first oil way, and pushes a mode locking piston rod to move outwards, and the oil in the rod cavity of the mode locking oil cylinder flows back to the oil tank through the servo valve;
s4: and (3) locking a mold: and driving the servo valve to return to the middle position, wherein each oil way is in a pressure maintaining state, and the position of the mode locking piston rod is kept unchanged.
10. The control method for realizing the micro-die opening system of the correlation injection molding machine according to claim 9, wherein in the step S1, when the movable die plate is selected to be slightly opened, an oil way on one side of the second electromagnetic directional valve is opened, oil enters a rod cavity of the second die breaking cylinder from a fifth oil way through the second electromagnetic directional valve, and pushes the second die breaking piston rod to move inwards; when the fixed template is selected to be slightly opened, an oil way at the other side of the first electromagnetic directional valve is opened, oil enters a rod cavity of the first mold breaking oil cylinder from a fourth oil way through the first electromagnetic directional valve, and a piston rod of the first mold breaking oil cylinder is pushed to move inwards.
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